New Influence Keystone ideas

Since uber keystones are removed and Exarch/Eater clusters look kinda empty, how about keystones that increase the odds of certain types of altars to roll.
For example: "Altars spawned in map have x% increased chance to offer cards/currency/scarabs(certain type of scarab for example scarabs for mechanics that are on the same side of atlas tree as that type of influence) as reward.

Another type of keystone could be "For each altar used (or each boss/minions/player modyfing altar used) in map players have x% increased chance to drop scarabs or something, but altars dont provide their buffs.

What do you think? If you have any more suggestions put them in this thread, I'd like to hear them. ^_^